<script setup>
import GoodsItem from "@/views/Home/components/GoodsItem.vue";
import { getSubCategoryListApi } from "@/apis/subcategory";
import { getSubCategoryAPI } from "@/apis/subcategory";
import { onMounted, ref } from "vue";
import { useRoute } from "vue-router";
// 获取面包屑导航数据
const route = useRoute();
const subCategoryList = ref({});

const getSubCategoryList = async () => {
  const res = await getSubCategoryListApi(route.params.id);
  subCategoryList.value = res.data.result;
  // console.log(subCategoryList.value);
};
onMounted(() => {
  getSubCategoryList();
});

// 获取基础列表数据渲染
const goodList = ref([]);
const reqData = ref({
  id: route.params.id,
  page: 1,
  pageSize: 20,
  sortedField: "publishTime",
});
const getSubCategory = async () => {
  const res = await getSubCategoryAPI(reqData.value)
  goodList.value = res.data.result.items
};
onMounted(() => {
  getSubCategory();
});

// tab切换回调
const tabChange = () => { 
  //console.log('tabChange');
  reqData.value.page = 1
  getSubCategory()
};
// 是否禁用无限滚动加载
const disabled = ref(false);
// 无限滚动加载 的 v-infinite-scroll 指令监听是否满足触底条件
const load = async() => {
  //console.log('加载更多数据');
  reqData.value.page++
  const res = await getSubCategoryAPI(reqData.value)
  goodList.value = [...goodList.value, ...res.data.result.items];
  if(res.data.result.items.length === 0){
    // 如果没有更多数据了，禁用无限滚动加载
    disabled.value = true
  }
  
}
</script>

<template>
  <div class="container">
    <!-- 面包屑 -->
    <div class="bread-container">
      <el-breadcrumb separator=">">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item
          :to="{ path: `/category/${subCategoryList.parentId}` }"
          >{{ subCategoryList.parentName }}
        </el-breadcrumb-item>
        <el-breadcrumb-item>{{ subCategoryList.name }}</el-breadcrumb-item>
      </el-breadcrumb>
    </div>
    <div class="sub-container" >
      <el-tabs v-model="reqData.sortedField" @tab-change="tabChange" >
        <el-tab-pane label="最新商品" name="publishTime"></el-tab-pane>
        <el-tab-pane label="最高人气" name="orderNum"></el-tab-pane>
        <el-tab-pane label="评论最多" name="evaluateNum"></el-tab-pane>
      </el-tabs>
      <div class="body" v-infinite-scroll="load" :infinite-scroll-disabled="disabled">
        <!-- 商品列表-->
        <GoodsItem v-for ="good in goodList" :good="good" :key ="good.id" />
      </div>
    </div>
  </div>
</template>



<style lang="scss" scoped>
.bread-container {
  padding: 25px 0;
  color: #666;
}

.sub-container {
  padding: 20px 10px;
  background-color: #fff;

  .body {
    display: flex;
    flex-wrap: wrap;
    padding: 0 10px;
  }

  .goods-item {
    display: block;
    width: 220px;
    margin-right: 20px;
    padding: 20px 30px;
    text-align: center;

    img {
      width: 160px;
      height: 160px;
    }

    p {
      padding-top: 10px;
    }

    .name {
      font-size: 16px;
    }

    .desc {
      color: #999;
      height: 29px;
    }

    .price {
      color: $priceColor;
      font-size: 20px;
    }
  }

  .pagination-container {
    margin-top: 20px;
    display: flex;
    justify-content: center;
  }
}
</style>